Oxygen sensor and vehicle

Abstract

The invention discloses an oxygen sensor and a vehicle, and the oxygen sensor comprises a detection probe which comprises a first housing and a ceramic chip installed in the first housing; the receiving piece comprises a second shell and a plurality of elastic pieces, a containing groove is formed in the end, facing the first shell, of the second shell, and each elastic piece comprises a fixed part and a movable part which are connected in a bent mode; wherein in the process that the connecting part of the ceramic chip is inserted into the containing groove in a matched mode, the connecting part makes contact with the movable part and enables the movable part to elastically deform, so that the end, away from the notch, of the movable part abuts against the fixed part and slides in the direction away from the notch along the fixed part. The movable part is spaced from the fixed part in a free state, scratching during contact of the connecting part is avoided, the movable part abuts against the fixed part to achieve rigid contact along with insertion of the connecting part, rigid friction force is reduced while stable contact force is applied, and the assembling and using stability of the oxygen sensor is effectively improved.

Description

Technical Field

[0001] This application belongs to the field of oxygen sensor technology, and particularly relates to an oxygen sensor and a vehicle. Background Technology

[0002] The oxygen sensor primarily detects the oxygen content in engine exhaust and sends a corresponding voltage signal to the electronic control unit (ECU) to indicate whether the air-fuel mixture is lean or rich. The ECU then controls the fuel injection and air intake accordingly to ensure the engine operates at the optimal air-fuel mixture, creating ideal conditions for the three-way catalytic converter's exhaust gas treatment. If the fuel mixture is too rich, the fuel quantity is reduced and the air intake is increased. If the fuel mixture is too lean, the fuel quantity is increased and the air intake is reduced.

[0003] In related technologies, the chip of an oxygen sensor and the internal structure of the sensor are in contact with a mating coating. During the assembly process, there may be uneven stress, and the chip coating may have insufficient elasticity, resulting in poor contact. There is even a risk that it may be damaged or scratched, leading to contact failure. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an oxygen sensor and a vehicle that ensures the stability of chip contact in the oxygen sensor and is less prone to damage to the chip, thereby improving the stability of assembly and use.

[0005] In a first aspect, this application provides an oxygen sensor, comprising: The detection probe includes a first housing and a ceramic chip installed inside the first housing, with the connecting portion of the ceramic chip extending outside the first housing; The receiving component includes a second housing and a plurality of spring pieces. The second housing is detachably connected to the first housing. A receiving groove is provided at one end of the second housing facing the first housing. The plurality of spring pieces are respectively installed on opposite sides of the receiving groove. Each spring piece includes a fixed part and a movable part that are bent and connected. The fixed part is fixedly installed on the inner wall of the receiving groove. The movable part is located on the side of the fixed part away from the inner wall of the receiving groove, and the end of the movable part near the opening of the receiving groove is connected to the fixed part. In the free state, the movable part is spaced apart from the slot opening of the receiving groove, the fixed part, and the bottom wall of the receiving groove. During the process of the ceramic chip connecting part being inserted into the receiving groove, the connecting part contacts the movable part and causes the movable part to elastically deform, so that the end of the movable part away from the slot opening abuts against the fixed part and slides along the fixed part in the direction away from the slot opening.

[0006] According to the oxygen sensor of this application, the oxygen sensor ensures the stability of the spring's position by installing the spring in the receiving groove; the movable part is spaced apart from the fixed part in the free state, which not only ensures stable contact between the movable part and the connecting part, but also avoids scratching of the connecting part due to excessive resistance during the initial contact; as the connecting part is inserted, the movable part and the fixed part abut against each other to achieve rigid contact, which can apply a stable contact force. At the same time, the movable part slides along the fixed part to reduce rigid friction, further avoiding chip damage, and effectively improving the stability of oxygen sensor assembly and use.

[0007] According to one embodiment of this application, the active part includes a contact segment for contacting the connecting part, wherein the surface of the contact segment that contacts the connecting part is a plane, so that the contact segment and the connecting part are in surface contact.

[0008] According to one embodiment of this application, the active part further includes a support section, which is connected to the end of the contact section away from the slot, and the support section is inclined in the direction away from the slot towards the fixed part. In the free state, the supporting section is spaced apart from the fixed section at one end away from the slot. During the process of the ceramic chip connecting part being inserted into the receiving slot, the supporting section at one end away from the slot gradually approaches the fixed section until it abuts against the fixed section, and slides along the fixed section in the direction away from the slot.

[0009] According to one embodiment of this application, the movable part further includes an extension section, which is connected to the end of the support section away from the contact section and is bent to connect with the support section. When the support section is in contact with the fixed part, the extension section is in surface contact with the fixed part.

[0010] According to one embodiment of this application, the included angle between the support section and the fixing part is 30°-45°.

[0011] According to one embodiment of this application, the active part further includes a guide section connected to one end of the contact section near the slot, and the guide section is inclined in the direction near the slot towards the fixed part.

[0012] According to one embodiment of this application, the active part further includes a transition section, one end of which is bent and connected to the end of the fixed part near the slot, and the transition section is parallel to the fixed part. The end of the transition section away from the slot is connected to the end of the guide section near the slot.

[0013] According to one embodiment of this application, a protective baffle is provided at the slot opening. The protective baffle is located on the side of the receiving slot where the spring piece is located and extends toward the center of the slot opening. The projection of the guide section in the depth direction of the receiving slot is located within the projection of the protective baffle in the depth direction of the receiving slot.

[0014] According to one embodiment of this application, a first positioning part is provided at the end of the first housing facing the second housing, and a second positioning part is provided at the end of the second housing facing the first housing, and the first positioning part and the second positioning part are positioned and engaged.

[0015] Secondly, this application provides a vehicle that includes an oxygen sensor as described in any of the technical solutions in the first aspect.

[0016] The beneficial effects of the vehicle provided in the second aspect of this application are the same as those of the oxygen sensor provided in the first aspect, and will not be repeated here.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the exploded structure of the oxygen sensor provided in the embodiments of this application; Figure 2 This is another exploded structural diagram of the oxygen sensor provided in the embodiments of this application; Figure 3 This is another exploded structural diagram of the oxygen sensor provided in the embodiments of this application; Figure 4 yes Figure 3 Sectional view at point AA; Figure 5 This is a schematic diagram of the structure of the spring sheet provided in the embodiment of this application; Figure 6 This is a schematic diagram of a partial cross-sectional view of the structure.

[0019] Figure label: 100. Oxygen sensor; 110. Detection probe; 111. First housing; 1111. First positioning part; 112. Ceramic chip; 1121. Connecting part; 120. Receiving element; 121. Second housing; 1211. Receiving groove; 1212. Second positioning part; 1213. Protective edge; 1214. Guide rib; 122. Spring piece; 1221. Fixing part; 1222. Movable part; 12221. Transition section; 12222. Guide section; 12223. Contact section; 12224. Support section; 12225. Extension section. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] The following is for reference. Figures 1-6 This application describes an oxygen sensor according to an embodiment of the present application.

[0022] Please see Figures 1-6 Especially Figure 4 and Figure 6 This application provides an oxygen sensor 100, which includes a detection probe 110 and a receiver 120. The detection probe 110 includes a first housing 111 and a ceramic chip 112 installed inside the first housing 111. The connecting part 1121 of the ceramic chip 112 extends out of the first housing 111. The receiver 120 includes a second housing 121 and a plurality of spring pieces 122. The second housing 121 is detachably connected to the first housing 111. A receiving groove 1211 is provided at one end of the second housing 121 facing the first housing 111. The plurality of spring pieces 122 are respectively installed on opposite sides inside the receiving groove 1211. The spring piece 122 includes a fixed part 1221 and a movable part 1222 that are bent and connected. The fixed part 1221 is fixedly installed on the inner wall of the receiving groove 1211. The movable part 1222 is located on the side of the fixed part 1221 away from the inner wall of the receiving groove 1211, and the end of the movable part 1222 near the opening of the receiving groove 1211 is connected to the fixed part 1221. In the free state, the movable part 1222 is spaced apart from the opening of the receiving groove 1211 and the fixed part 1221 and the bottom wall of the receiving groove 1211. During the process of the connecting part 1121 of the ceramic chip 112 being inserted into the receiving groove 1211, the connecting part 1121 contacts the movable part 1222 and causes the movable part 1222 to elastically deform, so that the end of the movable part 1222 away from the opening abuts against the fixed part 1221 and slides along the fixed part 1221 in the direction away from the opening.

[0023] The detection probe 110 is the core component of the oxygen sensor 100 for detecting oxygen content. The first housing 111 serves as the mounting carrier for the ceramic chip 112. Its material can be a high-temperature resistant and corrosion-resistant metal, such as stainless steel, which can provide a stable mounting environment for the ceramic chip 112 and protect the chip from external environmental damage. The ceramic chip 112 is a key component for detecting oxygen content. Its connecting part 1121 extends out of the first housing 111 and is used to establish an electrical connection with the receiver 120 to realize the transmission of detection signals. The specific structure of the connecting part 1121 can be set as a protrusion or pin with conductive properties to ensure stable conductivity when in contact with the spring 122.

[0024] The receiver 120 is used to receive the detection signal transmitted by the ceramic chip 112. The second housing 121 is detachably connected to the first housing 111. This connection method facilitates the assembly, maintenance, and replacement of the oxygen sensor 100. Specific detachable connection methods can include threaded connection, snap-fit ​​connection, or flange connection. For example, a snap-fit ​​protrusion can be provided on the first housing 111, and a snap-fit ​​groove adapted to the snap-fit ​​protrusion can be provided on the second housing 121, with the connection completed through the snap-fit ​​engagement of the snap-fit ​​protrusion and the groove. Alternatively, an external thread can be provided on the first housing 111, and a rotatable internal threaded sleeve can be provided on the second housing 121, with the internal threaded sleeve and external thread engaging to achieve a fixed connection. A receiving groove 1211 is provided at the end of the second housing 121 facing the first housing 111. Its function is to provide insertion space for the connecting part 1121 of the ceramic chip 112 and to provide an installation position for the spring piece 122. The size of the receiving groove 1211 must be adapted to the size of the connecting part 1121 to ensure that the connecting part 1121 can be smoothly inserted and fully contact the spring piece 122.

[0025] Multiple spring contacts 122 are respectively installed on opposite sides of the receiving groove 1211. The number of spring contacts 122 is not specifically limited and can be designed according to the structure of the connecting part 1121 of the ceramic chip 112, and can be two, four or more. In some examples, the ceramic chip 112 can be plate-shaped, and both sides of the connecting part 1121 of the ceramic chip 112 have pins in the thickness direction. Then, multiple spring contacts 122 are respectively set on the two side walls of the receiving groove 1211 corresponding to the thickness direction of the connecting part 1121. Specifically, when the two surfaces of the connecting part 1121 in the thickness direction are respectively provided with pins, two spring contacts 122 are provided accordingly. The two spring contacts 122 are symmetrically installed on opposite side walls of the receiving groove 1211, so that the connecting part 1121 can be subjected to symmetrical contact force when inserted, ensuring contact stability. If the two surfaces of the connecting part 1121 in the thickness direction are respectively provided with two pins, four spring contacts 122 are provided accordingly. The four spring contacts 122 can be paired up and symmetrically set on opposite side walls of the receiving groove 1211.

[0026] The spring piece 122 includes a fixed part 1221 and a movable part 1222 connected by bending. The fixed part 1221 is fixedly installed on the inner wall of the receiving groove 1211. The fixing method can be welding, bonding or screw connection, etc., to ensure that the position of the spring piece 122 does not shift during operation. The movable part 1222 is located on the side of the fixed part 1221 away from the inner wall of the receiving groove 1211, and the end of the movable part 1222 near the opening of the receiving groove 1211 is connected to the fixed part 1221. This bending structure gives the movable part 1222 a certain elastic deformation ability, providing a basis for elastic contact with the connecting part 1121.

[0027] In its free state, the end of the movable part 1222 that is away from the slot is spaced apart from the bottom wall of the fixed part 1221 and the receiving slot 1211. This spaced arrangement provides elastic deformation space for the movable part 1222 and ensures that the connecting part 1121 can make smooth contact with the movable part 1222 when it is initially inserted, thus avoiding excessive initial contact resistance. During the insertion and engagement of the connecting portion 1121 of the ceramic chip 112 into the receiving groove 1211, the connecting portion 1121 first contacts the movable portion 1222. As the connecting portion 1121 continues to be inserted, the movable portion 1222 undergoes elastic deformation under the force of the connecting portion 1121, gradually moving closer to the fixed portion 1221 until the end of the movable portion 1222 away from the groove abuts against the fixed portion 1221. At this point, the movable portion 1222 and the fixed portion 1221 form a rigid contact, which can apply a stable contact force to the connecting portion 1121, ensuring the reliability of the electrical connection. At the same time, the end of the movable portion 1222 away from the groove slides along the fixed portion 1221 in a direction away from the groove. This sliding process converts the elastic deformation of the movable portion 1222 into displacement along the fixed portion 1221, reducing the rigid friction between the movable portion 1222 and the connecting portion 1121, and preventing the surface of the connecting portion 1121 from being scratched.

[0028] In actual operation, during assembly, the connecting part 1121 of the ceramic chip 112 is aligned with the receiving groove 1211 of the second housing 121 and inserted. Initially, the connecting part 1121 contacts the movable part 1222. Since the movable part 1222 is spaced from the fixed part 1221 in its free state, the initial contact resistance is small, and the connecting part 1121 can be smoothly pushed in. As the connecting part 1121 continues to be inserted, the movable part 1222 is compressed and undergoes elastic deformation. Its end away from the groove gradually approaches and abuts against the fixed part 1221, while sliding along the fixed part 1221 in a direction away from the groove until the connecting part 1121 is inserted in place. At this time, the movable part 1222 applies a stable contact force to the connecting part 1121 under the action of elastic restoring force, realizing a reliable electrical connection between the ceramic chip 112 and the receiver 120. During operation, the ceramic chip 112 detects the oxygen content in the engine exhaust gas and transmits the detection signal to the receiver 120 through the contact between the connecting part 1121 and the spring 122, and then sends it to the electronic control unit.

[0029] According to the oxygen sensor 100 provided in the embodiments of this application, the oxygen sensor 100 of this application ensures the stability of the position of the spring piece 122 by installing the spring piece 122 in the receiving groove 1211; the movable part 1222 is spaced apart from the fixed part 1221 in the free state, which not only ensures the stable contact between the movable part 1222 and the connecting part 1121, but also avoids the connecting part 1121 being scratched due to excessive resistance during the initial contact; as the connecting part 1121 is inserted, the movable part 1222 and the fixed part 1221 abut to achieve rigid contact, which can apply a stable contact force. At the same time, the movable part 1222 slides along the fixed part 1221 to reduce the rigid friction force, further avoiding chip damage, and effectively improving the stability of the oxygen sensor 100 assembly and use.

[0030] Please see Figure 4 , Figure 5 and Figure 6 According to some embodiments of this application, the active part 1222 includes a contact segment 12223 for contacting the connecting part 1121. The surface of the contact segment 12223 that contacts the connecting part 1121 is a plane, so that the contact segment 12223 and the connecting part 1121 are in surface contact.

[0031] The contact segment 12223 on the active part 1222 is the part that directly contacts the connecting part 1121 of the ceramic chip 112, and its structural design directly affects the stability and reliability of the contact. The surface of the contact segment 12223 that contacts the connecting part 1121 is set as a plane. This planar structure can increase the contact area between the contact segment 12223 and the connecting part 1121. Compared with point contact or line contact, surface contact can effectively reduce contact resistance, reduce loss during signal transmission, and ensure that the detection signal can be accurately and stably transmitted from the ceramic chip 112 to the receiver 120.

[0032] The plane of the contact segment 12223 can be formed by stamping or grinding the movable part 1222 of the spring piece 122. The size of the plane can be adapted to the size of the contact end face of the connecting part 1121. For example, when the contact end face of the connecting part 1121 is rectangular, the plane size of the contact segment 12223 can be slightly larger than the rectangular end face to ensure that the two can fit together completely when in contact. At the same time, the plane needs to maintain a certain degree of flatness to avoid poor local contact due to uneven surface, and further improve the stability of the contact.

[0033] During the process of inserting the connecting part 1121 into the receiving groove 1211, the contact end face of the connecting part 1121 first contacts the plane of the contact segment 12223. As the connecting part 1121 is pushed forward, the plane of the contact segment 12223 always remains in contact with the contact end face of the connecting part 1121. This surface contact method allows the contact force to be evenly distributed on the contact surface, avoiding excessive local pressure that could damage the connecting part 1121 or the contact segment 12223. It also prevents the contact position from shifting due to factors such as vibration, ensuring that the oxygen sensor 100 can maintain a stable electrical connection under complex operating conditions such as vehicle driving.

[0034] Please see Figure 4 , Figure 5 and Figure 6 According to some embodiments of this application, the movable part 1222 further includes a support section 12224, which is connected to the end of the contact section 12223 away from the slot. The support section 12224 is inclined in the direction away from the slot towards the fixing part 1221. In the free state, the end of the support section 12224 away from the slot is spaced apart from the fixing part 1221. During the process of the connecting part 1121 of the ceramic chip 112 being inserted into the receiving groove 1211, the end of the support section 12224 away from the slot gradually approaches the fixing part 1221 until it abuts against the fixing part 1221, and slides along the fixing part 1221 away from the slot.

[0035] The support section 12224 of the movable part 1222 is connected to the end of the contact section 12223 away from the opening of the receiving groove 1211. Its main function is to provide elastic support for the contact section 12223 and guide the movable part 1222 to undergo orderly elastic deformation when the connecting part 1121 is inserted. The support section 12224 is inclined towards the fixed part 1221 in the direction away from the opening. This inclined structure is the key to realizing the elastic deformation and sliding of the movable part 1222. The inclination angle can be designed according to factors such as the elasticity of the spring 122 material and the required contact force. For example, it can be set to 30°-60°, which can ensure that the support section 12224 has sufficient elastic restoring force and that the movable part 1222 can deform smoothly when subjected to force.

[0036] When the connecting portion 1121 of the ceramic chip 112 is inserted into the receiving groove 1211, the connecting portion 1121 first contacts the plane of the contact section 12223 and applies force, which is transmitted to the support section 12224 through the contact section 12223. Since the support section 12224 is inclined, under the action of the force, the support section 12224 will elastically bend and deform towards the fixing portion 1221, and its end away from the groove opening will gradually approach the fixing portion 1221. As the connecting part 1121 continues to be inserted, the end of the supporting section 12224 away from the slot eventually abuts against the fixing part 1221. At this point, the supporting section 12224 can no longer bend towards the fixing part 1221, but instead slides away from the slot along the fixing part 1221. During this process, the elastic deformation of the supporting section 12224 gradually increases, and the elastic restoring force generated therefrom is transmitted to the connecting part 1121 through the contact section 12223, so that the contact section 12223 and the connecting part 1121 maintain stable surface contact.

[0037] The inclined design and sliding fit of the support section 12224 not only make the deformation process of the movable part 1222 smoother and avoid the impact of sudden force on the connecting part 1121, but also convert elastic deformation into controllable displacement through the contact and sliding between the support section 12224 and the fixed part 1221, ensuring that the contact force gradually and steadily increases with the insertion depth. This not only ensures the reliability of the connection, but also further reduces the risk of the connecting part 1121 being scratched.

[0038] Please see Figure 4 , Figure 5 and Figure 6 According to some embodiments of this application, the active part 1222 further includes an extension section 12225, which is connected to the end of the support section 12224 away from the contact section 12223 and is bent to connect with the support section 12224. When the support section 12224 is in contact with the fixing part 1221, the extension section 12225 is in surface contact with the fixing part 1221.

[0039] The extension 12225 of the movable part 1222 is connected to the end of the support section 12224 away from the contact section 12223, and is bent to connect with the support section 12224. This bending structure makes the extension 12225 and the support section 12224 form a certain angle. The angle can be designed to be adapted to the surface shape of the fixing part 1221 and the tilt angle of the support section 12224, for example, set to 90°-135°, to ensure that the extension 12225 can form a good contact fit with the fixing part 1221. The extension 12225 and the support section 12224 can also be integrally molded, and the material is consistent with the overall material of the spring 122, using elastic conductive materials such as beryllium copper and phosphor bronze to ensure the uniformity of structural strength and elastic performance.

[0040] The main function of the extension section 12225 is to increase the contact area between the movable part 1222 and the fixed part 1221 when the support section 12224 contacts the fixed part 1221. This makes the force exerted by the movable part 1222 on the fixed part 1221 more uniform, avoiding local stress concentration that could damage the fixed part 1221 or the support section 12224. Simultaneously, the contact fit between the extension section 12225 and the fixed part 1221 further enhances the stability of the movable part 1222's sliding process, preventing it from shifting or jamming while sliding along the fixed part 1221, thus ensuring smooth deformation and sliding of the movable part 1222.

[0041] When the connecting portion 1121 of the ceramic chip 112 is not inserted into the receiving groove 1211, the movable portion 1222 is in a free state, and the extension section 12225 moves away from the fixed portion 1221 along with the support section 12224, maintaining a distance from the fixed portion 1221. When the connecting portion 1121 is inserted and pushes the support section 12224 closer to the fixed portion 1221, the extension section 12225 also moves towards the fixed portion 1221. When the end of the support section 12224 away from the groove contacts the fixed portion 1221, the extension section 12225 simultaneously contacts the fixed portion 1221. At this time, the extension section 12225 and the fixed portion 1221 form a surface contact or a line contact (depending on the structural design of the extension section 12225; if the surface of the extension section 12225 that contacts the fixed portion 1221 is a plane, then a surface contact is formed). As the connecting part 1121 continues to be inserted, the supporting section 12224 drives the extension section 12225 to slide away from the slot along the fixed part 1221. The extension section 12225 always maintains contact with the fixed part 1221, and the sliding cooperation between it and the fixed part 1221 provides a guiding effect for the overall displacement of the moving part 1222, making the sliding trajectory of the moving part 1222 more stable.

[0042] By setting the extension section 12225, the contact between the movable part 1222 and the fixed part 1221 changes from a single point contact to a multi-point or multi-segment contact between the support section 12224 and the extension section 12225. This not only improves the structural stability of the movable part 1222 during deformation and sliding, but also disperses the pressure of the support section 12224 on the fixed part 1221 through the extension section 12225, preventing the fixed part 1221 from deforming or wearing due to excessive local stress, thereby extending the service life of the spring 122 and the second housing 121. At the same time, it ensures that the contact force of the contact section 12223 on the connecting part 1121 remains stable, further ensuring the reliability of the electrical connection of the oxygen sensor 100.

[0043] According to some embodiments of this application, the included angle between the support section 12224 and the fixing part 1221 can be 30°-45°.

[0044] The angle between the support section 12224 and the fixed part 1221 is set to 30°-45°. This angle range is the optimal range determined by considering factors such as the elastic performance of the spring piece 122, the insertion resistance of the connecting part 1121, and the stability of the contact force. As the main load-bearing part for the elastic deformation of the movable part 1222, the angle between the support section 12224 and the fixed part 1221 directly affects the magnitude of the elastic restoring force and the smoothness of deformation of the movable part 1222.

[0045] When the included angle is 30°-45°, it can ensure that the support section 12224 has sufficient elastic deformation space, so that the contact resistance of the connecting part 1121 is small in the initial insertion stage, avoiding scratches on the surface of the connecting part 1121. It can also ensure that the support section 12224 generates a stable and increasing elastic restoring force during the deformation process. When the support section 12224 abuts against the fixing part 1221, the elastic restoring force is transmitted to the connecting part 1121 through the contact section 12223, forming a reliable surface contact pressure and ensuring the stability of electrical signal transmission. If the included angle is too large (greater than 45°), the support section 12224 will be too tilted, resulting in greater initial resistance when the connecting part 1121 is inserted. Furthermore, the support section 12224 is prone to plastic deformation due to excessive bending, losing its elastic recovery ability. If the included angle is too small (less than 30°), the support section 12224 will be too tilted, resulting in insufficient elastic deformation space and insufficient elastic recovery force. Even if the support section 12224 abuts against the fixing part 1221, it will be difficult to apply sufficient contact force to the connecting part 1121, which may lead to poor contact.

[0046] In practical applications, the included angle can be finely adjusted according to the specific material and thickness of the spring 122. For example, when beryllium copper with a high elastic modulus is selected, the included angle can be close to 30° to balance the elastic force and insertion resistance; when phosphorus copper with a slightly lower elastic modulus is selected, the included angle can be close to 45° to ensure sufficient contact force. This range of included angles allows the support section 12224 to achieve a smooth transition from elastic bending to sliding along the fixing part 1221 during the insertion of the connecting part 1121, which avoids rigid impact, ensures contact reliability, and further improves the stability of the oxygen sensor 100 assembly and use.

[0047] Please see Figure 4 , Figure 5 and Figure 6 According to some embodiments of this application, the active part 1222 further includes a guide section 12222, which is connected to one end of the contact section 12223 near the slot. The guide section 12222 is inclined in the direction near the slot towards the fixing part 1221.

[0048] The guide section 12222 of the movable part 1222 is connected to the end of the contact section 12223 near the opening of the receiving groove 1211. Its core function is to provide guidance for the insertion of the connecting part 1121 of the ceramic chip 112 into the receiving groove 1211, ensuring that the connecting part 1121 can make accurate and smooth contact with the contact section 12223, and avoiding collisions or scratches between the connecting part 1121 and the spring piece 122 due to insertion position deviation. The guide section 12222 is inclined towards the fixing part 1221 in the direction near the opening of the groove. This inclined structure forms a guide entrance that converges towards the contact section 12223, guiding the connecting part 1121 to gradually slide along the inclined surface of the guide section 12222 towards the plane of the contact section 12223.

[0049] The guide section 12222 and the contact section 12223 can be integrally molded, with the material consistent with the spring piece 122, such as beryllium copper or phosphor bronze, to ensure connection strength and structural stability. The inclination angle of the guide section 12222 can be designed according to the opening size of the receiving groove 1211 and the size of the connecting part 1121, and is usually slightly larger than the inclination angle of the support section 12224, for example, set to 45°-60°, to form a gentler guide slope and further reduce the initial resistance of the connecting part 1121 during insertion. The end of the guide section 12222 away from the contact section 12223 can extend to the edge of the groove of the receiving groove 1211, so that the connecting part 1121 can contact the guide section 12222 from the beginning of insertion and obtain guidance throughout the process.

[0050] When the connecting portion 1121 of the ceramic chip 112 is inserted into the receiving groove 1211, the connecting portion 1121 first contacts the inclined surface of the guide section 12222. Since the guide section 12222 is inclined towards the fixing portion 1221, the connecting portion 1121 will gradually approach the plane of the contact section 12223 under the guidance of the guide section 12222. As the connecting portion 1121 continues to advance, it slides along the inclined surface of the guide section 12222 to the plane of the contact section 12223, completing a smooth transition from guidance to contact. This guiding effect effectively avoids rigid collision between the connecting portion 1121 and the edge of the contact section 12223 due to alignment deviation during insertion, reduces the risk of scratching the surface coating of the connecting portion 1121, and also reduces the alignment difficulty during assembly, improving assembly efficiency.

[0051] Furthermore, the inclined arrangement of the guide section 12222 can generate a pre-force on the movable part 1222 during the initial insertion of the connecting part 1121, causing the movable part 1222 to undergo slight elastic deformation in advance. This prepares the contact section 12223 for subsequent surface contact with the connecting part 1121, ensuring a smoother contact process. Through the design of the guide section 12222, the ease of assembly of the oxygen sensor 100 and the protective effect of the connecting part 1121 are further improved. Together with the aforementioned technical features, they jointly ensure the overall assembly stability and operational reliability of the oxygen sensor 100.

[0052] Please see Figure 4 , Figure 5 and Figure 6 According to some embodiments of this application, the active part 1222 may further include a transition section 12221, one end of which is bent and connected to the end of the fixed part 1221 near the slot, and the transition section 12221 is parallel to the fixed part 1221, and the end of the transition section 12221 away from the slot is connected to the end of the guide section 12222 near the slot.

[0053] The transition section 12221 of the movable part 1222 connects the fixed part 1221 and the guide section 12222. One end of the transition section 12221 is bent and connected to the end of the fixed part 1221 near the opening of the receiving groove 1211. The transition section 12221 is parallel to the fixed part 1221. This parallel structure allows the transition section 12221 to form a stable connection with the fixed part 1221, avoiding stress concentration in the movable part 1222 at the junction of the fixed part 1221 and the guide section 12222. The transition section 12221, the fixed part 1221, and the guide section 12222 are all integrally molded, and the material is consistent with the spring piece 122, ensuring the firmness of the connection and the continuity of the structure, and avoiding the risk of loosening or breakage caused by segmented connection.

[0054] The main function of the transition section 12221 is to provide stable support and installation reference for the guide section 12222, while adjusting the initial position of the guide section 12222 so that the tilt angle and guide inlet position of the guide section 12222 better match the insertion trajectory of the connecting part 1121. Since the transition section 12221 is parallel to the fixing part 1221, its length can be adjusted according to the depth of the receiving groove 1211 and the design requirements of the guide section 12222. For example, when the receiving groove 1211 is shallow, the length of the transition section 12221 can be appropriately shortened to ensure that the guide section 12222 can extend to the vicinity of the groove opening; when the receiving groove 1211 is deep, the length of the transition section 12221 can be extended to keep the guide section 12222 in a suitable guiding position.

[0055] In terms of structural fit, the end of the transition section 12221 furthest from the slot is connected to the end of the guide section 12222 closest to the slot, forming a continuous movable section 1222 structure of "fixed part 1221 - transition section 12221 - guide section 12222 - contact section 12223 - support section 12224 - extension section 12225" (if there is an extension section 12225). This continuous structure allows the force to be smoothly transmitted along each section when the movable section 1222 is subjected to force and deformation, avoiding abnormal deformation caused by excessive local force. When the connecting part 1121 is inserted and contacts the guide section 12222, the force is transmitted to the transition section 12221 through the guide section 12222. Because the transition section 12221 is parallel to the fixed part 1221 and firmly connected, it can stably transmit the force to the fixed part 1221, while providing support for the guide section 12222, preventing the guide section 12222 from shifting under force, and ensuring the stability of the guiding function.

[0056] The transition section 12221 optimizes the overall elastic distribution of the movable part 1222, making the deformation of the movable part 1222 more uniform during the insertion of the connecting part 1121. For example, when the connecting part 1121 pushes the guide section 12222, the transition section 12221 can adaptively adjust to the slight deformation of the guide section 12222, avoiding cracks at the connection between the guide section 12222 and the fixing part 1221 due to deformation differences. Through the connection of the transition section 12221, the fixing part 1221, the guide section 12222, the subsequent contact section 12223, and the support section 12224 form a cooperating whole, further improving the structural stability and elastic performance of the spring piece 122, and providing a more reliable structural guarantee for the smooth insertion and stable contact of the oxygen sensor 100 connecting part 1121.

[0057] Please see Figure 4 and Figure 6 According to some embodiments of this application, a protective baffle may be provided at the slot. The protective baffle is provided on the side of the receiving groove 1211 where the spring piece 122 is provided, and extends toward the middle of the slot. The projection of the guide section 12222 in the depth direction of the receiving groove 1211 is located within the projection of the protective baffle in the depth direction of the receiving groove 1211.

[0058] A protective baffle is installed at the opening of the receiving groove 1211, on the side of the receiving groove 1211 where the spring piece 122 is located. Extending towards the center of the receiving groove 1211, its main function is to protect the guide section 12222 of the movable part 1222, preventing external foreign objects from directly impacting the guide section 12222 when entering the receiving groove 1211, thus avoiding deformation or damage. Simultaneously, it prevents the guide section 12222 from bending due to accidental contact when the oxygen sensor 100 is not assembled, ensuring the initial structural integrity of the spring piece 122. The protective baffle can be integrally molded with the second housing 121, using the same material as the second housing 121, such as stainless steel or other high-temperature and corrosion-resistant materials, ensuring sufficient structural strength.

[0059] The extension length of the protective edge needs to be designed according to the position and size of the guide section 12222, with the principle of both providing protection and not affecting the insertion of the connecting part 1121, so as to avoid interference between the protective edge and the guide section 12222 when the guide section 12222 is deformed.

[0060] The projection of the guide section 12222 into the depth direction of the receiving groove 1211 lies within the projection of the protective baffle. This design means that, viewed from the depth direction of the receiving groove 1211, the protective baffle completely covers the guide section 12222, placing the guide section 12222 within the protection range of the protective baffle. When an external foreign object enters from the groove opening, the protective baffle will first block the foreign object, preventing it from directly contacting the guide section 12222. During the handling or storage of the oxygen sensor 100, if the groove opening is accidentally impacted, the protective baffle can also buffer the impact force, reducing the direct force on the guide section 12222.

[0061] During the insertion of the connecting part 1121, since the protective baffle is only located on the side of the receiving groove 1211 where the spring piece 122 is located and has a moderate extension length, the connecting part 1121 will not interfere with the protective baffle when inserted from the groove. It can still smoothly contact the guide section 12222 and slide along the guide section 12222 to the contact section 12223. The setting of the protective baffle, together with the guide section 12222, transition section 12221 and other structures, not only protects the key guiding component of the spring piece 122, but also does not affect the smoothness of the assembly process, further improving the structural reliability and anti-interference capability of the oxygen sensor 100 and extending its service life.

[0062] Please see Figure 1 , Figure 2 and Figure 3 According to some embodiments of this application, the first housing 111 is provided with a first positioning part 1111 at one end facing the second housing 121, and the second housing 121 is provided with a second positioning part 1212 at one end facing the first housing 111, and the first positioning part 1111 and the second positioning part 1212 are positioned and engaged.

[0063] The first positioning part 1111 is disposed at the end of the first housing 111 facing the second housing 121, and the second positioning part 1212 is disposed at the end of the second housing 121 facing the first housing 111. The core function of the positioning cooperation between the two is to ensure that the first housing 111 and the second housing 121 are accurately aligned when connected, so that the connecting part 1121 of the ceramic chip 112 can be accurately aligned with the receiving groove 1211 of the second housing 121, and to avoid misalignment and collision between the connecting part 1121 and the spring piece 122 when inserted due to housing connection misalignment.

[0064] The specific structures of the first positioning part 1111 and the second positioning part 1212 can adopt various adaptation forms, and the number is not specifically limited. For example, the first positioning part 1111 can be set as a positioning boss, and the second positioning part 1212 can be set as a positioning groove that matches the positioning boss. The cross-sectional shape of the positioning boss can be designed as circular, square, or polygonal, and the shape and size of the positioning groove can be perfectly matched with the positioning boss. During assembly, the positioning boss can be inserted into the positioning groove to achieve rapid positioning. Alternatively, the first positioning part 1111 can be set as a positioning pin, and the second positioning part 1212 can be set as a positioning hole. The positioning pin and the positioning hole can be interference-fitted or clearance-fitted, and precise positioning can be achieved through the pin-hole fit. If two positioning parts are set, they can be symmetrically distributed along the circumference of the shell to further improve positioning stability. If three or more are set, they can be evenly distributed along the circumference to ensure balanced force when the shell is connected.

[0065] The first positioning part 1111 and the first housing 111, and the second positioning part 1212 and the second housing 121 can all be integrally molded, with the material being consistent with the corresponding housing to ensure structural strength and connection firmness. Before the first housing 111 and the second housing 121 are detachably connected (such as by threaded connection or snap-fit), the relative positions of the two are determined by the positioning cooperation of the first positioning part 1111 and the second positioning part 1212, so that the receiving groove 1211 and the connecting part 1121 of the ceramic chip 112 are precisely aligned, and then the fixed connection operation is performed.

[0066] Please see Figure 4 According to some embodiments of this application, two guide ribs 1213 may be provided in the receiving groove 1211. The guide ribs 1213 have a guide surface on the side facing the groove opening. The two guide ribs 1213 are respectively provided on two opposite sides of the receiving groove 1211. Specifically, the two guide ribs 1213 are respectively provided on two sides of the receiving groove 1211 corresponding to the width direction of the connecting part 1121, so as to correct the centering of the connecting part 1121 during the insertion process and ensure that the pins on the connecting part 1121 can make stable contact with the spring piece 122.

[0067] This application also provides a vehicle that includes an oxygen sensor 100 as described in any of the above technical solutions.

[0068] It should be noted that, since the vehicle provided in this application embodiment includes the oxygen sensor 100 of any of the above technical solutions, it has the technical features and effects of the oxygen sensor 100 of any of the above technical solutions, which will not be repeated here.

[0069] As a key component for detecting vehicle engine exhaust gases, the oxygen sensor 100 is installed in the vehicle's exhaust system. Specifically, it can be mounted on the engine exhaust pipe near the engine block, or at the front or rear of the three-way catalytic converter, to quickly and accurately detect the oxygen content in the exhaust gases.

[0070] When the vehicle is running, the exhaust gas generated by engine combustion passes through the detection probe 110 of the oxygen sensor 100. The ceramic chip 112 inside the detection probe 110 is stably in contact with the spring 122 of the receiver 120 through its connecting part 1121, transmitting the oxygen content detection signal to the vehicle's electronic control unit. The electronic control unit determines the air-fuel mixture ratio of the engine based on this detection signal, and then adjusts the fuel injection quantity and intake air quantity to ensure that the engine always operates in the optimal air-fuel ratio state, providing ideal conditions for the exhaust gas treatment of the three-way catalytic converter and effectively reducing the emission of harmful substances in the exhaust gas.

[0071] Because the oxygen sensor 100 incorporates optimized designs such as the spring 122 structure and positioning structure, stable contact of the ceramic chip 112 connector 1121 is achieved, preventing scratches on the connector 1121. This significantly improves assembly and operational stability. Therefore, even under complex driving conditions (such as bumpy roads and high / low temperature environments), the oxygen sensor 100 can continue to operate stably, ensuring precise engine control by the electronic control unit. This not only improves fuel economy and reduces fuel waste but also lowers exhaust emissions, meeting environmental requirements. Furthermore, it reduces the frequency of repairs due to poor contact or damage to the oxygen sensor 100, enhancing the overall reliability and durability of the vehicle.

[0072] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0073] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0074] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0075] In the description of this application, "multiple" means two or more.

[0076] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0077] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An oxygen sensor, characterized in that, include: The detection probe includes a first housing and a ceramic chip installed inside the first housing, wherein the connecting portion of the ceramic chip extends outside the first housing; The receiving component includes a second housing and a plurality of spring pieces. The second housing is detachably connected to the first housing. The second housing has a receiving groove at one end facing the first housing. The plurality of spring pieces are respectively installed on opposite sides of the receiving groove. Each spring piece includes a fixed part and a movable part that are bent and connected. The fixed part is fixedly installed on the inner wall of the receiving groove. The movable part is located on the side of the fixed part away from the inner wall of the receiving groove, and the end of the movable part near the opening of the receiving groove is connected to the fixed part. In the free state, the movable part is spaced apart from the opening of the receiving groove at one end, and is also spaced apart from the fixed part and the bottom wall of the receiving groove. During the process of the connecting part of the ceramic chip being inserted into the receiving groove, the connecting part contacts the movable part and causes the movable part to elastically deform, so that the end of the movable part away from the opening abuts against the fixed part and slides along the fixed part in a direction away from the opening.

2. The oxygen sensor according to claim 1, characterized in that, The movable part includes a contact segment for contacting the connecting part, and the surface of the contact segment that contacts the connecting part is a plane so that the contact segment and the connecting part are in surface contact.

3. The oxygen sensor according to claim 2, characterized in that, The movable part further includes a support section, which is connected to the end of the contact section away from the slot. The support section is inclined in the direction away from the slot towards the fixed part. In the free state, the supporting section is spaced apart from the slot at one end and the fixing section at the other end. During the process of the ceramic chip connecting part being inserted into the receiving slot, the supporting section at one end away from the slot gradually approaches the fixing section until it abuts against the fixing section, and slides along the fixing section in a direction away from the slot.

4. The oxygen sensor according to claim 3, characterized in that, The movable part further includes an extension section, which is connected to the end of the support section away from the contact section and is bent and connected to the support section. When the support section is in contact with the fixing part, the extension section is in surface contact with the fixing part.

5. The oxygen sensor according to claim 3, characterized in that, The angle between the support section and the fixing part is 30°-45°.

6. The oxygen sensor according to any one of claims 2-5, characterized in that, The movable part further includes a guide section connected to one end of the contact section near the slot, and the guide section is inclined in the direction near the slot towards the fixed part.

7. The oxygen sensor according to claim 6, characterized in that, The movable part further includes a transition section, one end of which is bent and connected to the end of the fixed part near the slot, and the transition section is parallel to the fixed part. The end of the transition section away from the slot is connected to the end of the guide section near the slot.

8. The oxygen sensor according to claim 7, characterized in that, A protective baffle is provided at the slot opening. The protective baffle is located on the side of the receiving slot where the spring piece is located and extends toward the center of the slot opening. The projection of the guide section in the depth direction of the receiving slot is located within the projection of the protective baffle in the depth direction of the receiving slot.

9. The oxygen sensor according to any one of claims 1-5, characterized in that, The first housing has a first positioning part at one end facing the second housing, and the second housing has a second positioning part at one end facing the first housing. The first positioning part and the second positioning part are positioned and engaged.

10. A vehicle, characterized in that, Includes the oxygen sensor as described in any one of claims 1-9.

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